Q.
What was it before it became an apple?
A.Blossom.

Q.What part of the blossom becomes fruit?
A.The inside.

Q.What becomes of the leaves of the blossom?
A.They fall off the tree.

Q.What was it before it became a blossom?
A.A bud.

Q.What caused the buds to become larger, and produce leaves and blossom?
A.The sap.